When your furnace is working properly, it should provide warm air without making too much noise. While it’s expected to catch your furnace making noise as it begins running, other noises are indicating your furnace requires immediate professional assistance.

Here are some of the most frequent furnace noises and what they can mean. If your furnace is making a weird noise, our friendly heating pros are here to help with the best furnace repair in Swanton, Ohio.

1. Furnace Making a Banging Noise

You could have a serious problem on your hands if you’re noticing your furnace making a banging noise. If your furnace is making a knocking noise, it might indicate there could be a couple of problems. These range from gas accumulating in your furnace or a ductwork situation.

Banging Sounds Coming from Your Furnace

Your heating system gets grimy as time passes, so that’s why it’s essential to schedule seasonal furnace maintenance with Northwest Services. One of the jobs our technicians perform during this appointment is clean your furnace’s burners. When this part gets grimy, you may hear your furnace making a loud rumbling noise when ignition takes longer than normal. The following gas buildup might crack your furnace’s heat exchanger, where natural gas changes into heat. Any cracks in it can discharge carbon monoxide, which is regularly released away from your home. This toxic gas can be lethal in large concentrations.

If you’re hearing banging or knocking sounds coming from your furnace, Northwest Services advises turning it off and reaching us at 419-548-5017. Excessive natural gas in your furnace or a broken heat exchanger are dangerous problems that necessitate immediate service.

Banging Sounds Coming from Your Ductwork

Your furnace uses ductwork to move heated air around your home. If the ductwork wasn’t put in properly or is getting dated, it can be noisy when your furnace runs. This can be the case if your furnace makes a banging noise when it shuts off. Call Northwest Services at 419-548-5017 and we’ll figure out the problem.

2. Furnace Buzzes Constantly

If you hear your furnace making a buzzing noise, don’t wait to call us. A buzzing sound frequently is telling you there’s an electrical problem, like with its transformer, blower motor or capacitor.

Your furnace uses an internal transformer to work on the proper voltage. If wires or the box is loose, you may hear a low humming noise in the furnace when off. Your furnace also has a blower motor, which distributes hot or cooled air around your rooms, and a capacitor, which turns on the motor. If either of these pieces are fading, they will buzz when the furnace switches on.

3. Furnace Making a Rattling Noise

If your furnace is making a rattling noise, it could be the result of something minor, like a loose screw, or something serious, like a broken part. In either case, we advise shutting your furnace off and getting in touch with our heating pros at 419-548-5017 for help.

4. Furnace Is Making a High-Pitched Squealing Sound

If your furnace makes a high-pitched noise, like squealing, when it’s on, it’s trying to alert you it requires some TLC. If you’ve neglected furnace maintenance recently, belts could be worn down or a bearing could need to be lubricated. We know that maintenance frequently slips your mind, but our pros can get your furnace operating quietly again fast.

5. Furnace Making a Whistling Noise

When you’re detecting your furnace making a whistling noise, it’s likely the result of an air leak in your ductwork. You could also be aware of whistling while the furnace is working if a floor vent is loose. If you’ve examined your vents but are still sensing whistling, Northwest Services can help. It’s important to get loose ductwork fixed quickly, because it can result in comfort problems in your residence and drive up your energy expenses.

6. Furnace Makes Noise that Sounds Like Scraping Metal

It’s not a good sign if you notice your furnace making a grinding noise. This metal-on-metal racket typically means there’s a problem with your furnace’s blower. Shut down your furnace off promptly and reach our pros at 419-548-5017 for support.

When you’re noticing a strange noise from your furnace, Northwest Services is ready to support you. Contact us at 419-548-5017 to schedule your furnace repair appointment right away.